Aardbevingen #22

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Tsunami waves up to 60 cm (2 feet) hit Japan’s Izu Islands following shallow M5.0 earthquake

Japan’s Izu Islands and parts of the Pacific Coast near Tokyo experienced tsunami waves up to 60 cm (2 feet) in height triggered by a shallow M5.0 earthquake that occurred at 20:26 UTC on October 8, 2023 (05:26 local time, October 9). The quake’s epicenter was situated near the uninhabited Torishima Island at the southern end of the Izu chain and is part of an ongoing earthquake swarm in the region.

Tsunami waves were recorded in various regions with Hachijo and some other islands in Izu, as well as an island in the Ogasawara chain in the Pacific Ocean south of Tokyo, experiencing up to 60 cm (2 feet) in wave height. In Nichinan, Miyazaki Prefecture the waves reached 20 cm (0.6 feet), Tateyama, Chiba Prefecture, measured 30 cm (1 foot), while Tosashimizu, Kochi Prefecture, and Nakano Island in Kagoshima Prefecture saw waves of 40 cm (1.3 feet).

The tsunami alert prompted evacuation directives in five coastal cities in Kochi and 12 municipalities in Chiba, which were lifted at 03:00 UTC (12:00 LT).

Local authorities reported no injuries or damages on the islands or in the prefectures of Chiba, Kochi, Kagoshima, or Miyazaki. However, several small boats in the Hachijo and Kozu islands, part of the Izu chain, were overturned, with no injuries reported.

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Researcher warns of potential M7 earthquake in Western Taiwan within 10 years

A renowned Chinese researcher has warned that a catastrophic earthquake of magnitude 7 or higher is likely to strike western Taiwan within the next 10 years. The warning came following a magnitude 6.2 earthquake off the east coast of Taiwan on October 24, 2023. The USGS reported this quake as M5.9.

Seismic activity in western Taiwan has been unusually quiet since 2018, accumulating unreleased energy and raising concern for a major earthquake, particularly as the region houses critical industrial facilities and railway transportation. Wang Chung-ho, a researcher at Academia Sinica’s Institute of Earth Sciences, stated that Taiwan enters a “major earthquake cycle” approximately every 30 years. The last such event was the 1999 Jiji earthquake, a magnitude 7 or higher temblor.

According to Wang, the absence of significant seismic activity in western Taiwan contrasts sharply with the frequent earthquakes occurring in the eastern half of the country and offshore. He explained that while frequent earthquakes might be unsettling, they help release pent-up energy, thus reducing the likelihood of a disastrous event.

The risk is amplified by the fact that western Taiwan is home to significant domestic industrial facilities and railway systems. A large-scale earthquake in this area could lead to severe disasters, affecting a multitude of sectors and potentially causing loss of life and property.

National Taiwan University geosciences professor Kuo Chen-hao noted the challenge in predicting the exact timing of a major earthquake due to the relatively short period of seismic observation data, which started becoming available around 1960. Kuo emphasized that Taiwan has improved its building standards after the 1999 Jiji earthquake. However, he is advising the public to prepare earthquake kits containing food, water, and emergency supplies.

While both Wang and Kuo agree that stress has been accumulating in western Taiwan, they highlight the inherent challenges in predicting earthquakes, citing the complexity of rock structures and varying levels of stress that different regions can withstand.

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Op vrijdag 6 oktober 2023 10:20 schreef Frutsel het volgende:
[ twitter ]

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Het rommelt flink hier...

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Op maandag 9 oktober 2023 00:34 schreef Houtenbeen het volgende:

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Na 9 bevingen van de rond de m5 in bijna een uur tijd

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Op maandag 9 oktober 2023 09:04 schreef Frutsel het volgende:
Ligt daar een onderwater vulkaan ofzo? Of wat verwachten ze daar?

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New island emerges near Iwo Jima in Ogasawara chain, Japan

On November 1, 2023, military personnel located on Iwoto Island witnessed the birth of a new island following intense volcanic activity. The eruption, which occurred 1 km (0.62 miles) off the island’s southern coast, was preceded by frequent volcanic tremors since October 21.

An undersea volcanic eruption has led to the creation of a new island within the Ogasawara island chain, situated more than 1 000 kilometers (620 miles) to the south of Tokyo. This natural occurrence was confirmed by the Maritime Self-Defense Force’s (MSDF) base on the nearby Iwoto (Ioto) island, historically known as Iwo Jima, on November 1.

The personnel at the MSDF base were alerted to the event by significant noise and the sight of soil and debris being propelled into the sky.

According to the Global Volcanism Program, the eruption that created it occurred at a vent located about 1 km (0.6 miles) off the coast of Okinahama, on the SE side of the island. During an overflight on October 30, observers recorded explosions every few minutes that ejected dark material about 20 m (65 feet) above the surface of the ocean. Ejecta from the vent built a black-colored island and floating pumice was present around the island.

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Powerful earthquakes shake eastern Indonesia. No immediate reports of casualties

A series of powerful and shallow earthquakes have shaken a sparsely populated island chain in eastern Indonesia

JAKARTA, Indonesia -- A series of powerful and shallow earthquakes shook a sparsely populated island chain in eastern Indonesia on Wednesday. There were no immediate reports of damage or casualties.

The U.S. Geological Survey said a magnitude 6.9 earthquake hit an area 341 kilometers (211 miles) southwest of Tual, a coastal town in Maluku province, at a depth of 10 kilometers (6.2 miles).

It was followed by another 7.0 magnitude quake in the same area and two 5.1 magnitude aftershocks, the USGS said.

Indonesia’s Meteorology, Climatology and Geophysical Agency said there was no danger of a tsunami but warned of possible aftershocks.

Villagers in the Tanimbar Islands reported strong tremors for a few minutes but there was no panic, the National Disaster Mitigation Agency’s spokesperson Abul Muhari said in a statement.

He said the epicenter of the quakes was in the Banda Sea near the Tanimbar Islands, with a population of about 127,000.

The country of more than 270 million people is frequently struck by earthquakes, volcanic eruptions and tsunamis because of its location on the arc of volcanoes and fault lines in the Pacific Basin known as the “Ring of Fire.”

In 2004, a 9.1 magnitude Indian Ocean quake set off a tsunami that killed more than 230,000 people in a dozen countries, most of them in Indonesia’s Aceh province.

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Magnitude 5.2
Region WESTERN TEXAS
Date time 2023-11-08 10:27:48.7 UTC
Location 31.613 ; -103.971
Depth 8 km
Distance 154 km WSW of Odessa, United States / pop: 118,000 / local time: 04:27:48.7 2023-11-08
50 km WNW of Pecos, United States / pop: 9,500 / local time: 04:27:48.7 2023-11-08

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Op zaterdag 18 november 2023 01:48 schreef DavidTwente het volgende:
Ijsland: 15 km lang ondergrondse tunnel met magma staat op uitbarsten.

https://www.livescience.c(...)and-really-look-like

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Meer dan honderd doden na aardbeving China

Bij een aardbeving in China zijn zeker 118 mensen om het leven gekomen en honderden mensen gewond geraakt, meldt het Chinese staatspersbureau Xinhua.

De aardbeving was rond middernacht lokale tijd en had een kracht van 6,2. Het epicentrum lag op zo'n 100 kilometer van de stad Lanzhou in de noordwestelijke provincie Gansu. In die provincie vielen 105 doden. In het naastgelegen Qinghai kwamen zeker 13 mensen om.

Volgens de autoriteiten in Gansu zijn er bijna 600 gewonden en zijn meer dan 4700 huizen beschadigd geraakt. Verder is over de schade nog weinig bekendgemaakt.

Ook over het aantal vermisten is nog weinig duidelijk, tot nu toe zijn er officieel twintig mensen vermist. President Xi heeft opdracht gegeven tot een massale zoek- en reddingsactie.

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Op vrijdag 29 maart 2024 08:32 schreef Frutsel het volgende:
6.0 bij Griekenland

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Op vrijdag 5 april 2024 16:35 schreef Eyjafjallajoekull het volgende:
CNBC meld als breaking nieuws een aardbeving in New York... maar zal wel niet zo sterk zijn lijkt me...

Edit: 4.8

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Aardbeving bij het Groningse Zeerijp met een kracht van 2.1

ZEERIJP - Bij het Groningse Zeerijp heeft zich donderdagochtend rond 11.10 uur een aardbeving voorgedaan. Die had een kracht van 2.1. De beving, op een diepte van 3 kilometer, is „geïnduceerd” volgens het KNMI. Dat betekent dat de beving samenhangt met de gaswinning in de regio.

Bij Zeerijp (in het noorden van de provincie) was ook op maandag 8 april al een aardbeving. Die had een kracht van 0.3.

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Series of small earthquakes near large faults in Southern California sparks public concern

Subsequently, two quakes occurred under the El Sereno neighborhood in eastern Los Angeles, the strongest being an M3.4 near South Pasadena at 16:56 UTC on June 2. Finally, a trio of tremors struck the Costa Mesa-Newport Beach area, peaking at a magnitude of 3.6.

In total, the region experienced half a dozen quakes over 2.5 magnitude within a week. This is unusual for Southern California, especially since all quakes hit highly populated areas. Despite concerns, experts state that these smaller quakes do not predict larger, destructive earthquakes in urban Southern California.

Susan Hough, a seismologist with the U.S. Geological Survey, mentioned that there is only a 1 in 20 chance of any earthquake in California being followed by a larger one within the same area in a week. Even if a subsequent quake occurred, it would likely be only slightly larger.

James Dolan, an earth sciences professor at the University of Southern California, noted that all three sets of recent quakes occurred near large, potentially dangerous faults. The Puente Hills thrust fault, for example, lies beneath highly populated areas and could generate catastrophic shaking. A magnitude 7.5 quake on this fault could result in 3,000 to 18,000 fatalities.

Another concerning fault is the Compton thrust fault, active and capable of producing significant quakes. It has generated six earthquakes over the past 12 000 years, each over magnitude 7.

Lastly, the Transverse Range thrust fault system was the site of the May 31 Ojai Valley quake. This complex fault system has historically produced large earthquakes, some possibly exceeding magnitude 8.

Despite impressive steps by some cities to retrofit older buildings, many vulnerabilities remain. The recent tremors serve as a reminder of the region’s seismic risks and the need for ongoing preparedness.

Dolan emphasized the importance of preparing for future seismic events, noting that seismic lulls, like the current one, tend to end with clusters of large-magnitude quakes.

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Drie aardbevingen met magnitude tussen 4,1 en 4,8 treffen Kreta

Het Griekse eiland Kreta werd woensdagochtend getroffen door drie aardbevingen in een half uur tijd. Volgens lokale media raakte daarbij niemand gewond. Het eiland kreeg dit jaar al bijna duizend aardbevingen te verwerken.

De bevingen vonden plaats in het zuiden van het eiland op een diepte van 3 tot 5 kilometer onder de zeebodem. De kracht lag tussen 4,1 en 4,8 op de schaal van Richter. De bevingen werden gevoeld tot in de stad Heraklion aan de noordkust.

Volgens statistieken van het geodynamisch instituut in Athene zijn er dit jaar al ongeveer duizend bevingen geweest in Kreta. Het eiland ligt ten noorden van een diepe tektonische kloof waar de Afrikaanse en Euraziatische platen samenkomen.

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Op donderdag 8 augustus 2024 15:19 schreef Houtenbeen het volgende:
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Very strong M6.9 earthquake hits Tonga

A very strong earthquake, registered by the USGS as M6.9, hit Tonga at 23:29 UTC on August 25, 2024. The agency reports a depth of 106.7 km (66.3 miles). EMSC is reporting M6.9 at a depth of 102 km (63.4 miles). The quake was followed by an M6.1 at the same depth just one minute later.

The epicenter was located 72.2 km (44.9 miles) W of Pangai (population 1 738) and 154.7 km (96.1 miles) N of Nuku’alofa (population 22 400).
6 000 people are estimated to have felt very strong shaking, 98 000 strong, and 3 000 moderate.

Based on all available data, NWS PTWC said there was no tsunami threat from this earthquake.

The USGS issued a Green alert for shaking-related fatalities and economic losses. There is a low likelihood of casualties and damage.

Overall, the population in this region resides in structures that are highly vulnerable to earthquake shaking, though some resistant structures exist. The predominant vulnerable building types are unknown/miscellaneous types and wood construction.

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Tsunami-waarschuwing voor Japan na aardbeving nabij Torishima-eiland
Japan heeft een tsunamiwaarschuwing afgegeven aan inwoners van de eilanden Izu en Ogasawara. De waarschuwing volgde op een aardbeving met een kracht van 5,9 op de schaal van Richter die dinsdagochtend (plaatselijke tijd) plaatsvond op een diepte van 10 km in de Stille Oceaan nabij Torishima-eiland.

Volgens het Meteorologisch Agentschap moeten de bewoners van de twee eilanden, zo'n 600 km ten zuiden van Tokio, rekening houden met golven die tot één meter hoog kunnen worden. Inwoners krijgen het advies om ver weg bij de kustlijn te blijven. Bewoners van de regio verklaarden aan de Japanse omroep NHK dat ze de aardbeving niet hebben gevoeld.

Japan ligt op het kruispunt van verschillende tektonische platen langs de Pacifische Ring van Vuur. Het is een van de landen met de meeste seismische activiteit ter wereld. De archipel telt zo’n 125 miljoen inwoners en wordt jaarlijks getroffen door ongeveer 1.500 bevingen, waarvan de meeste van geringe sterkte zijn.

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Op woensdag 16 oktober 2024 10:06 schreef Frutsel het volgende:
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Naschok van
WKN / Twee zware (7+) aardbevingen treffen Turkije en Syrie: 50000+ doden

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Op dinsdag 10 december 2024 01:24 schreef Houtenbeen het volgende:
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5.8 in Nevada/California

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Earthquake swarm near New Madrid, Missouri

A series of earthquakes struck near the New Madrid Fault Line in southeastern Missouri on December 9, 2024, with the strongest registering M3.0 at 06:27 UTC (12:27 local time), according to the U.S. Geological Survey (USGS). This region, known as the New Madrid Seismic Zone, is the most seismically active area in the United States east of the Rocky Mountains.

Earthquake swarm near New Madrid Fault line, Missouri on December 9, 2024. Image credit: TW/SAM, Google

The sequence started at 06:00 UTC (00:00 LT) on December 9 with an M2.0 quake at a depth of 12.2 km (7.6 miles), located 6 km (3.7 miles) ESE of Hayward (population 131).

M2.2 was registered just 8 minutes later about 8 km (5 miles) ESE of Matthews (population 628), at a depth of 19.2 km (12 miles).

The strongest of the sequence, an M3.0 earthquake, struck near Howardville (population 367) at 06:27 UTC (00:27 LT) at a depth of 7.8 km (4.8 miles).

M2.1, M1.8, and M1.9 were registered by 12:25 UTC, followed by the final earthquake at 13:30 UTC (07:30 LT) — an M2.2 near Marston (population 477), Missouri at a depth of 8.4 km (5.2 miles).

The New Madrid Seismic Zone is one of the most seismically active regions in North America east of the Rocky Mountains. However, such swarms are not uncommon in this area and do not necessarily indicate an impending larger earthquake.

They are typically characterized by clusters of small to moderate earthquakes occurring over a short period. They often result from the gradual release of tectonic stress along fault lines or changes in subsurface conditions, such as fluid movement within the Earth’s crust.

While the New Madrid Seismic Zone has historically produced some of the most powerful earthquakes in the United States, modern monitoring has shown that smaller swarms are relatively frequent.

The zone produced 3 massive earthquakes, estimated to have been between M7.0 and M8.0, from 1811 to 1812. The events caused widespread destruction and were felt as far as Cincinnati, Ohio; Charleston, South Carolina; and New Orleans, Louisiana.

Earthquakes here occur on a complex network of faults within the Reelfoot Rift, an ancient geological feature that formed approximately 500 million years ago. The faults are buried beneath layers of sediment, making seismic activity difficult to predict.

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Op maandag 17 februari 2025 14:58 schreef Frutsel het volgende:
Relatief middelzware aardbeving bij Lissabon

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Never forget 1755

Zwaarste aardbeving in Europa allertijden...

https://nl.wikipedia.org/wiki/Aardbeving_Lissabon_1755

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Op maandag 17 februari 2025 15:01 schreef xpompompomx het volgende:

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9 op de Richterschaal is ook wel heel fors ja. heb ooit 7.8 (Nepal 2015) mee mogen maken, maar dat haalt het nog lang niet bij 9.

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Op maandag 17 februari 2025 15:02 schreef Frutsel het volgende:

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Heftig Hopelijk stond je niet bovenop de berg?

Ik ben door de beving van Roermond heen geslapen
Zou niet weten hoe het voelt

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Op maandag 17 februari 2025 15:29 schreef xpompompomx het volgende:

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Was iets van 40km ZW van Everest. In een huis dat gebouwd was van losse, op elkaar liggende platen leisteen met leem er tussen. Met dat huis liep het dus niet goed af. Gelukkig geen doden/gewonden onder de mensen die daar toen aanwezig waren, maar in de omgeving waren er wel aardig wat gewonden en ook doden.

Maar wat het meeste opviel was dat er in Kathmandu stukken minder schade was dan je zou verwachten gezien de totale afwezigheid van bouwregelgeving. Helaas wel veel schade aan de bekende monumenten.

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Op dinsdag 18 februari 2025 02:44 schreef yessie234 het volgende:

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Lag je te slapen tijdens de beving? Ik ben van de beving in Roermond wel wakker geworden. Heel raar, zo'n schuddend huis. Frutsel, is er geen aardbevingstoerisme, een plek waar je de schokken zelf kunt ervaren? Er zijn wel gezelschappen die naar elke actieve vulkaan afreizen om erbij te kunnen zijn.

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Op dinsdag 18 februari 2025 10:06 schreef Frutsel het volgende:

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Dat ga ik ook ooit nog wel doen... Hawaii ofzo

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Op maandag 17 februari 2025 15:29 schreef xpompompomx het volgende:

[..]
Was iets van 40km ZW van Everest. In een huis dat gebouwd was van losse, op elkaar liggende platen leisteen met leem er tussen. Met dat huis liep het dus niet goed af. Gelukkig geen doden/gewonden onder de mensen die daar toen aanwezig waren, maar in de omgeving waren er wel aardig wat gewonden en ook doden.

Maar wat het meeste opviel was dat er in Kathmandu stukken minder schade was dan je zou verwachten gezien de totale afwezigheid van bouwregelgeving. Helaas wel veel schade aan de bekende monumenten.

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Op dinsdag 18 februari 2025 02:44 schreef yessie234 het volgende:

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Lag je te slapen tijdens de beving? Ik ben van de beving in Roermond wel wakker geworden. Heel raar, zo'n schuddend huis. Frutsel, is er geen aardbevingstoerisme, een plek waar je de schokken zelf kunt ervaren? Er zijn wel gezelschappen die naar elke actieve vulkaan afreizen om erbij te kunnen zijn.

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Strong M6.0 earthquake, multiple aftershocks hit off the coast of North Sulawesi, Indonesia

A strong earthquake registered by the BMKG as M6.0 struck southeast of Tutuyan, North Sulawesi, Indonesia, at 22:55 UTC on February 25, 2025 (06:55 LT on February 26). The agency is reporting a depth of 10 km (6.2 miles). USGS and EMSC reported a slightly higher magnitude of 6.1. Multiple aftershocks followed, with at least twelve registering M4.0 or higher.

Based on all available data, there is no tsunami threat from this earthquake.

Local media reported the quake caused panic among residents, with people leaving their homes fearing stronger shaking.

More than 40 aftershocks were reported by EMSC over the next 8 hours, with magnitudes mostly ranging between 2.8 and 4.9 and depths up to 10 km (6.2 miles). The strongest was M4.9 at a depth of 22 km (14 miles). Twelve aftershocks had magnitudes of 4.0 or higher.

The seismic sequence remains centered near the Minahasa, Sulawesi region.

The USGS issued a Green alert for fatalities and economic losses, indicating a low likelihood of casualties or damage.

Overall, the population in this region resides in structures that are vulnerable to earthquake shaking, though resistant structures exist. The predominant vulnerable building types are unreinforced brick with concrete floor and precast concrete frame with wall construction.

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Strong M6.5 earthquake hits Jan Mayen, Norway

A strong earthquake registered by the USGS as M6.5 hit near the coast of Jan Mayen, Norway at 02:33 UTC on March 10, 2025. The agency is reporting a depth of 10 km (6.2 miles). EMSC reported a slightly higher magnitude of M6.6 with the same depth.

The epicenter was located 36 km (22 miles) NNE of Olonkinbyen (population 14), 730 km (454 miles) NE of Akureyri (population 19 219), and 932 km (579 miles) W of Sortland (population 10 468), in the Svalbard and Jan Mayen region.

According to NWS/PTWC, this earthquake does not pose a tsunami threat based on all available data.

The USGS issued a Green alert for shaking-related fatalities and economic losses, indicating a low likelihood of casualties and damage.

Overall, the population in this region resides in structures that are resistant to earthquake shaking, though vulnerable structures exist. The predominant vulnerable building type is unreinforced brick with concrete floor construction.

Svalbard and Jan Mayen are located in tectonically active areas near the Arctic mid-ocean ridge, the Norwegian Sea, and the Greenland Sea.

Jan Mayen sits on the Jan Mayen Microcontinent, near the Mid-Atlantic Ridge, making it particularly prone to seismic activity, while Svalbard experiences quakes due to stress from plate boundaries and glacial rebound (isostatic adjustment after ice melting).

The frequency of earthquakes is higher in Jan Mayen due to its proximity to the Mid-Atlantic Ridge, a divergent plate boundary, compared to Svalbard, which has more sporadic activity tied to regional tectonics and glacial dynamics.

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Op vrijdag 28 maart 2025 07:58 schreef Perrin het volgende:
Holy shit, in Bangkok gevoeld, dat is iets van 1000km verderop!

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Op vrijdag 28 maart 2025 07:58 schreef Perrin het volgende:
Holy shit, in Bangkok gevoeld, dat is iets van 1000km verderop!

sheesh!!!

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Op vrijdag 28 maart 2025 08:15 schreef xpompompomx het volgende:

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U bent nu in ZO-Azië?

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Op zondag 30 maart 2025 14:30 schreef Momo het volgende:
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Tonga 7.0

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Chinese scientists warn of more earthquakes near Tibetan Plateau region
A team of Chinese seismologists have published a study last month warning of a heightened risk of devastating earthquakes – like the one with magnitude 7.9 which struck Myanmar on Mar 28 – in and around the Tibetan Plateau region, reported the scmp.com Apr 6. The question is whether this will lead China to rethink the world’s biggest hydroelectric dam it has given the go ahead to be built on the Yarlung Tsangpo river in Tibet’s Metog County, near the border with India. It is known to be a seismically active area and prone to landslides.

The study was published after the devastating 7.1-magnitude Jan 7 earthquake in Tibet’s Mt Everest county of Dingri, and days before the Myanmar quake which flattened buildings and killed thousands of people.

The peer-reviewed study, led by senior engineer Zhu Hongbin with the Beijing Earthquake Agency, was stated to have been published on Mar 20 in the Journal of Geodesy and Geodynamics, an academic publication run by the China Earthquake Administration.

The seismologists have analysed around 150 years of seismic data – from 1879 to the present day – to identify six major earthquake “active periods” in “China” and adjacent regions.

Each period was stated to correlate with shifts in the Earth’s rotational speed – measured through changes in the length of a day (LOD) – and corresponding tectonic stress realignments.

An active period from 1897 to 1912 was found to have clustered 12 major quakes along the Pamir-Baikal seismic belt in East Asia.

Subsequent phases were stated to have migrated clockwise: to the northeastern Tibetan Plateau (1920-1934), its southeastern edge (1946-1957), Yunnan and north China (1970-1976), and the Bayan Har block on the eastern Tibetan Plateau (2001-2015).

And the current phase, the sixth, centres on the Bayan Har block’s periphery, with researchers cautioning that stress fields may now pivot northeast, increasing the risk in Sichuan, Yunnan and the Himalayan front.

“The region may currently be entering the nascent phase of a new seismic active period,” Zhu’s team was stated to have written.

* * *

The study was stated to highlight accumulating strain in locked segments of the Longmenshan Fault in “southwest China”, which includes Tibet and was the site of the 2008 Sichuan earthquake, as well as the Eastern Himalayan Syntaxis, where GPS measurements show India’s northward push accelerating.

The Myanmar quake was stated to have occurred during a transitional LOD phase, which happened to fall in one of the predicted high-risk areas due to heightened northeast-oriented stress.

Satellite data was stated to reveal a 500km-long (310-mile-long) rupture zone extending all the way south to Thailand, with thrust mechanisms consistent with these forces.

Striking just 280km (174 miles) from the Tibetan Plateau’s southeastern edge, the Myanmar earthquake has intensified scrutiny of Zhu’s findings, the report said.

* * *

However, China may rest its decision to continue with the Yarlung Tsanpo world’s biggest dam project with sceptics of Zhu and his team’s report. They have argued that global seismic activity in 2025 remains below historical averages.

“There’s no evidence Earth has entered a shaking mode,” Gao Mengtan, a senior researcher with the China Earthquake Administration, was quoted as having told China’s state media on Mar 31.

“Seismic activities this year are actually quieter than before,” he has maintained.

Meanwhile, the scmp.com report noted that the Myanmar disaster was followed by smaller tremors which rattled Tibet, Xinjiang (East Turkestan) and Guangdong the week before, unnerving residents.

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M5.2 San Diego earthquake linked to Elsinore Fault renews concerns over major seismic risk in Southern California

The M5.2 earthquake that struck San Diego County near Julian on April 14, 2025, occurred along the Elsinore Fault Zone, a major strike-slip fault in Southern California capable of producing earthquakes up to magnitude 7.8. The fault runs near densely populated areas including Los Angeles, Long Beach, and Riverside, and its long period of limited activity may indicate an increased potential for a significant seismic event, according to recent research.

The M5.2 earthquake that struck San Diego County on April 14 caused no injuries or major damage, but it drew renewed attention to the Elsinore Fault’s potential to generate much larger earthquakes. While historically quiet, the fault forms part of a complex system capable of producing cascading ruptures that could impact millions.

The Elsinore Fault Zone is a right-lateral strike-slip fault extending about 180 km (112 miles) through Southern California, running parallel to the San Andreas Fault and forming part of the broader San Andreas fault system. It cuts through the Peninsular Ranges and passes near several major population centers, making it a significant seismic hazard.

Despite appearing inactive, the fault holds the potential to generate a powerful M7.8 earthquake, according to Caltech seismologist Lucy Jones.

Stretching from the Sonoran Desert in Imperial County, the Elsinore Fault zone passes through the western parts of Riverside County, affecting cities such as Temecula, Murrieta, and Lake Elsinore.

According to the Southern California Earthquake Data Center (SCEDC), the fault has a slip rate of approximately 4 mm/year (0.16 inch/year), indicating gradual accumulation of tectonic strain. Though relatively quiet in recent decades, this slow deformation contributes to long-term seismic potential.

As the Elsinore Fault reaches Corona, it splits into two parts: the Chino Fault, which goes toward Chino Hills, and the Whittier Fault, which runs through or near areas like Whittier, La Habra Heights, Hacienda Heights, Rowland Heights, La Habra, Brea, and Yorba Linda.

According to Jones, an earthquake is plausible, and it would start on the Elsinore Fault and move onto the Whittier Fault. This would send powerful energy straight into the L.A. Basin, making it one of the more dangerous earthquake scenarios.

In a model developed by the U.S. Geological Survey, an M7.8 earthquake along the Elsinore-Whittier system could produce violent shaking across a wide region. Cities that could see serious damage include El Monte, Hacienda Heights, Rowland Heights, Pico Rivera, Whittier, La Habra, Brea, Yorba Linda, Placentia, Chino Hills, Corona, Lake Elsinore, Murrieta, and Temecula.

The Elsinore Fault has been relatively quiet historically. The most significant recorded event occurred on May 15, 1910, near Temescal Valley, with an estimated magnitude of 6.0. This earthquake caused minimal damage, primarily toppling chimneys in areas such as Corona, Temescal, and Wildomar.

The fault extends southeast into Mexico, connecting with the Laguna Salada Fault. On February 23, 1892, the Laguna Salada Fault experienced a significant earthquake, estimated between M7.1 and 7.3. This event caused damage in both northern Baja California and southern California.

It has an estimated recurrence interval of approximately 250 years for major rupture events, suggesting there is a potential for a significant future earthquake, although the exact timing remains uncertain.

Several cities like Torrance, Santa Monica, and West Hollywood have taken steps to strengthen their buildings against earthquakes, requiring retrofits to boost safety. But in Los Angeles, steel frame buildings are still not part of any mandatory retrofit program—a gap that’s sparked concern about how ready the city really is for the next big quake. Meanwhile, in the Inland Empire, many older brick buildings are especially at risk.

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Op woensdag 23 april 2025 12:13 schreef Frutsel het volgende:
Naschok van 5.5 lees ik

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Op vrijdag 2 mei 2025 15:38 schreef Momo het volgende:
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Kreta getroffen door flinke aardbeving

Het Griekse eiland Kreta is opgeschrikt door een aardbeving met een kracht van 6.1. Die zou ook op Cyprus en in Egypte zijn gevoeld. Inwoners vertelden Griekse media dat de beving ongebruikelijk lang leek te duren.

Veel eilandbewoners schrokken in de vroege ochtend wakker van de beving en zouden snel hun woningen hebben verlaten. Op beelden in lokale media is te zien dat producten in een supermarkt over de vloer bezaaid liggen. Ook zijn er berichten over kleine aardverschuivingen.

De brandweer zegt nog geen hulpverzoeken of meldingen van ernstige schade te hebben ontvangen. Eenheden voeren patrouilles uit om een beeld te krijgen van de situatie. De burgemeester van Heraklion zei tegen omroep ERT dat er geen grote problemen zijn en dat scholen gewoon open kunnen blijven.

Het ging volgens het Amerikaanse geologische instituut USGS om een beving op bijna 69 kilometer diepte. Het epicentrum bevond zich ongeveer 58 kilometer ten noordoosten van de plaats Eloúnda op het onder toeristen populaire eiland.

De regio wordt vaker getroffen door aardbevingen. Eerder dit jaar ontstond een uittocht van toeristen en inwoners van het eiland Santorini toen aardschokken daar over een langere periode bleven aanhouden.

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Aardbeving met kracht van 6,1 bij Grieks eiland Kreta, ook gevoeld in andere landen
Voor de kust van het Griekse eiland Kreta is donderdagochtend een aardbeving met een magnitude van 6,1 gemeten. Dat meldt het Amerikaanse seismologische instituut (USGS).

De aardbeving vond plaats om 06.19 uur lokale tijd (05.19 uur Nederlandse tijd), op 69 kilometer diepte. Het epicentrum bevindt zich in de Kretenzische Zee op 58 kilometer van het vissersdorpje Elounda.

Volgens lokale media sprongen bewoners uit hun bed en ooggetuigen meldden dat op de schok een luid gebrom volgde. Veel mensen verlieten hun huizen om zichzelf in veiligheid te brengen.

De brandweer laat weten tot nu toe geen oproepen voor hulp te hebben ontvangen en er zijn voorlopig geen meldingen van ernstige schade. Volgens lokale media hebben de scholen op Kreta geen schade opgelopen en zullen ze normaal gezien open gaan. De situatie wordt voortdurend geëvalueerd.

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Kreta opgeschrikt door krachtige aardbeving
‘Kort, maar hevig. Een flinke schok, het hele huis trilde en ik schrok er van wakker’, zo getuigde een inwoner van Agios Nikolaos op de website van het EMSC, het Euro-Mediterrane Seismologisch Centrum.

De beving en enkele naschokken werden ook gevoeld op andere Egeïsche eilanden en in delen van het Griekse vasteland, waaronder in hoofdstad Athene. Op grotere afstand werd de beving gevoeld in Israël, Egypte en Cyprus.

Uit voorzorg werd er een tsunamialarm afgekondigd. Inwoners kregen een waarschuwing via sms, maar de tsnumami bleef uit.